Game crash after opening world

Whenever I open my world, it instantly crashes the game and freezes like 1-2 seconds before it crashes, it doesn't effect my other worlds for a while, using backups I made of the world is useless as it eventually does the exact same thing and starts crashing my game when I open it.
I really need my world back!!!

Notes:
1# Crashes on the "loading resource packs" screen.
2# World does not disappear on crash or lose any known data (checked files numerous times.)